Photocatalytic pollutant removal provides a competitive manner for wastewater purification.The exploration of efficient and durable photocatalysts is significant for this technique.Integrating carbon quantum dots and ...Photocatalytic pollutant removal provides a competitive manner for wastewater purification.The exploration of efficient and durable photocatalysts is significant for this technique.Integrating carbon quantum dots and S-scheme junction into one system represents an effective strategy for achieving the outstanding photocatalytic efficacy.In comparison to S-scheme junction,photocatalysts combining carbon quantum dots and S-scheme junction harness the merits of both,thus holding greater potential.Herein,a multicomponent fibrous photocatalyst of carbon quantum dots/CdS/Ta_(3)N_(5)that incorporates S-scheme heterojunction and carbon quantum dots is developed for high-efficient destruction of levofloxacin antibiotic.The as-prepared carbon quantum dots/CdS/Ta_(3)N_(5)heterojunction nanofibers manifest a significantly strengthened photocatalytic levofloxacin degradation activity,with the rate constant(0.0404 min^(−1))exceeding Ta_(3)N_(5),CdS/Ta_(3)N_(5),and CdS by 39.4,2.1,and 7.2 folds.Such remarkable photocatalytic performance is credited to the unique 1D/0D/0D core-shell heterostructure with compact-bound hetero-interface,which favors the synergistic effect between carbon quantum dots modification and S-scheme junction.This work offers a new way for developing new Ta_(3)N_(5)-based heterojunctions for environmental remediation.展开更多
文摘Photocatalytic pollutant removal provides a competitive manner for wastewater purification.The exploration of efficient and durable photocatalysts is significant for this technique.Integrating carbon quantum dots and S-scheme junction into one system represents an effective strategy for achieving the outstanding photocatalytic efficacy.In comparison to S-scheme junction,photocatalysts combining carbon quantum dots and S-scheme junction harness the merits of both,thus holding greater potential.Herein,a multicomponent fibrous photocatalyst of carbon quantum dots/CdS/Ta_(3)N_(5)that incorporates S-scheme heterojunction and carbon quantum dots is developed for high-efficient destruction of levofloxacin antibiotic.The as-prepared carbon quantum dots/CdS/Ta_(3)N_(5)heterojunction nanofibers manifest a significantly strengthened photocatalytic levofloxacin degradation activity,with the rate constant(0.0404 min^(−1))exceeding Ta_(3)N_(5),CdS/Ta_(3)N_(5),and CdS by 39.4,2.1,and 7.2 folds.Such remarkable photocatalytic performance is credited to the unique 1D/0D/0D core-shell heterostructure with compact-bound hetero-interface,which favors the synergistic effect between carbon quantum dots modification and S-scheme junction.This work offers a new way for developing new Ta_(3)N_(5)-based heterojunctions for environmental remediation.
